1、BS EN ISO 6553:2017Automatic steam traps Marking (ISO 6553:2016)BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN ISO 6553:2017 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 6553:2017. It supersedes BS EN 26553:1991 whi
2、ch is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PSE/18/1, Industrial valves, steam traps, actuators and safety devices against excessive pressure - Valves - Basic standards.A list of organizations represented on this committee can be obtained on request t
3、o its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017.Published by BSI Standards Limited 2017ISBN 978 0 580 91621 2 ICS 23.040.99; 23.060.01 Compliance with a
4、British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2017.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPIS
5、CHE NORM EN ISO 6553 January 2017 ICS 23.060.01 Supersedes EN 26553:1991English Version Automatic steam traps - Marking (ISO 6553:2016) Purgeurs automatiques de vapeurs deau - Marquage (ISO 6553:2016) Kondensatableiter - Kennzeichnung (ISO 6553:2016)This European Standard was approved by CEN on 23 D
6、ecember 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be
7、 obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to t
8、he CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ir
9、eland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Mana
10、gement Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 6553:2017 EBS EN ISO 6553:2017EN ISO 6553:2017 (E) 3 European foreword This document (EN ISO 6553:2017) has been prepared by
11、Technical Committee ISO/TC 153 “Valves” in collaboration with Technical Committee CEN/TC 69 “Intelligent transport systems” the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement
12、, at the latest by July 2017, and conflicting national standards shall be withdrawn at the latest by July 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any o
13、r all such patent rights. This document supersedes EN 26553:1991. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Es
14、tonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement n
15、otice The text of ISO 6553:2016 has been approved by CEN as EN ISO 6553:2017 without any modification. BS EN ISO 6553:2017ISO 6553:2016(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 General requirements . 15 Mandatory marking. 16 Optional markings 27 Addi
16、tional markings . 2Bibliography 3 ISO 2016 All rights reserved iiiContents PageBS EN ISO 6553:2017ISO 6553:2016(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards
17、 is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take p
18、art in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In partic
19、ular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of thi
20、s document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.
21、iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the
22、World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.This document was prepared by the European Committee for Standardization (CEN) Technical Committee CEN/TC 69, Industrial valves, in collaboration with ISO Technical
23、 Committee ISO/TC 153, Valves, in accordance with the agreement on technical cooperation between ISO and CEN (Vienna Agreement).This second edition cancels and replaces the first edition (ISO 6553:1980), which has been technically revised with the marking updated to be in accordance with ISO 5209 an
24、d EN 19.iv ISO 2016 All rights reservedBS EN ISO 6553:2017ISO 6553:2016(E)IntroductionThe purpose of this document is to establish certain basic requirements for the marking of automatic steam traps, and to give recommendations for additional information markings.This document has, in general, to be
25、 considered in conjunction with the specific requirements which may be agreed between the parties concerned. ISO 2016 All rights reserved vBS EN ISO 6553:2017BS EN ISO 6553:2017Automatic steam traps Marking1 ScopeThis document specifies mandatory and optional markings for automatic steam traps.2 Nor
26、mative referencesThere are no normative references in this document.3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 6552 apply.ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: avail
27、able at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp4 General requirementsThe specified markings shall be applied: either on the body, or on plates integral with the body or securely fixed on the body.In no case shall the markings be hidden by the fixi
28、ng elements of the steam trap.5 Mandatory markingThe following items shall be marked on the automatic steam trap: manufacturers name and/or trademark; maximum allowable pressure (bar or MPa)1); maximum allowable temperature (C); indication of the flow direction (arrow); shell material designation; n
29、ominal size (DN or NPS); nominal pressure (PN or Class designation).This marking is in compliance with ISO 5209 and EN 19. If a steam trap has no defined PN or Class designation, maximum allowable pressure and maximum allowable temperature are mandatory.For PN or Class designated steam traps, it is
30、permissible to omit the letters “DN” or “NPS” from the nominal size designation provided the PN or Class designation follows immediately after the size 1) 1 bar = 0,1 MPa.INTERNATIONAL STANDARD ISO 6553:2016(E) ISO 2016 All rights reserved 1BS EN ISO 6553:2017ISO 6553:2016(E)number and is on the sam
31、e line. For example, DN 50 PN 25 may be abbreviated to 50 PN 25 and NPS 2 Class 300 may be abbreviated to 2 CL 300.NOTE For steam traps less than or equal to DN 50 or NPS 2, the shell material marking can be omitted.6 Optional markingsThe following items may be marked on the automatic steam trap: ma
32、ximum operating pressure, or maximum differential pressure, according to the relative significance of each one; maximum test pressure (bar or MPa).7 Additional markingsA manufacturer having complied with the requirements in Clause 4 to Clause 6 maya) mark any of the items mentioned in Clause 5 and C
33、lause 6 in more than one place,EXAMPLE 1 If an item is marked on the body, it may also be repeated on the identification plate.b) add any other markings.EXAMPLE 2 Catalogue item numbers, provided that there is no risk of confusion between these markings and those mentioned in Clause 5 and Clause 6.2
34、 ISO 2016 All rights reservedBS EN ISO 6553:2017ISO 6553:2016(E)Bibliography1 ISO 5209, General purpose industrial valves Marking2 ISO 6552, Automatic steam traps Definition of technical terms3 EN 19, Industrial valves Marking of metallic valves ISO 2016 All rights reserved 3This page deliberately l
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